Hmmm... no pasta, rice, or seafood. But any type of meat is OK? And any type of vegetable? Soup is out, but stews or curries are OK?
ground meat, seasoned well and mixed with chopped veggies (carrots, onion, parnsips, anything, really) and topped with cheese and mashed potato, then baked. If you make them up in disposable pie tins, they freeze pretty well (unbaked) and then you can finish them in the oven.
I think I've posted a few here in the Busy Chef group, but most curries freeze well, you can make extra sauce and freeze that and then just simmer the meat in it for a fast meal later (unorthodox, maybe, but hey, it works). If you make the sauce a little thick, you can eat it with flatbread instead of rice.
Roast a chicken using your favorite recipe and, while it's cooking, roast root veggies in the same pan and some other veggies in another pan. Season the veggies simply, with oil, salt, and pepper, maybe a spritz of lemon juice. Leftover chicken can be shredded for burritos or salads, leftover root veggies can be roughly mashed and mixed with chicken for a great hash, and leftover other veggies will taste good in a cold salad.
Sliced turkey on rustic bread with cranberry sauce and gravy poured over top, served hot.
Toad in the hole:
Usually made with yorkshire pudding batter, you can bury the sausages in mashed potatoes instead (leave the potatoes chunky) and it still tastes good... here's a link to a more traditional recipe: http://www.cooks.com/rec/doc/0,1726,154170-255197, 00.html